Figure F17. Photomicrographs showing titanomagnetite morphologies. A. Alteration of titanomagnetite to maghemite along cleavage planes and around rims in the weathered flow top of Unit 10 (Sample 197-1205A-24R-2 [Piece 19, 124-130 cm]) (reflected light; f

Figure F17. Photomicrographs showing titanomagnetite morphologies. Q. Early stages of maghemite (bright blue-gray) replacement of titanomagnetite (dull pink-gray) in the Site 1205 basement lava units: maghemite development along titanomagnetite cleavage planes and fractures in Subunit 30b; note that several crystals are unaltered (Sample 197-1205A-45R-1, 126-128 cm) (reflected light; field of view = 0.25 mm; photomicrograph 1205A-265). R. Titanomagnetite inclusions in olivine from alkali basalt compared with groundmass titanomagnetite: two inclusions (arrows) in an olivine phenocryst in Subunit 3b (Sample 197-1205A-8R-1 [Piece 4, 59-61 cm]) (reflected light; field of view = 0.25 mm; photomicrograph 1205A-192).